Agricultural machine



pecf29; 1931; P. PHAN-QUANG I 1,839,000

AGRICULTURAL MACHINE Filed April 18, 1950. 3 Sheets-Sheet 1 r; TTOR/VEYS 3 Sheets-S hee't 2 2 N M w M 4 WZWT mM W.

1931- P. PHAN-QUANG AGRICULTURAL MACHINE Filed April 1 1950 x @EIE 1 aJ] Fgq D 1931- P. PHAN-QUANG I 1,839,000

' AGRICULTURAL-MACHINE Filed April 18, 1930 3 Sheets-Sheet 3 PatentedDec. 29, 1931 UNITED STATES PnUoNe PHAN-QUANG, or oivr oir, -eocnmaon-mnAGRICULTURAL ,imi'cam Application filed April 18, 1930, Serial No.445,307, andin France March 28, 1930.

The invention relates to agricultural inachines adapted to work on softgrounds and more particularlyadapted for use inrice plantations and ithas for its main object to provide a machine which will be able to prepare the ground by cutting off the weeds and roots even on a sandy andmuddy ground.

It has already been proposed to provide tractors and agriculturalengines with hol- 1o lowed rims in order to facilitate the progress ofthe engine on the ground.

In carrying my invention into practice, I make use of such type ofwheels, having hollowed riIns adapted to cut off the weeds and roots.The machine is provided with outer and inner wheels and the latter areso arranged as to cover the whole space between the outer wheels.

Other features of my invention will appear from the followingspecification:

In the accompanying drawings, given solely by way of example: 7

Fig. 1 is a side view of an improved machine according to the invention.

Fig. 2 is a rear view thereof.

Fig. 3 is a horizontal view thereof, with some parts removed.

Fig. 1 shows a fragmentary development of the rim of an improved wheelaccording to this invention.

Fig. 5 is a section of this rim on line 55 of Fig. 4.

On Figs. type of tractor or agricultural machine, provided in front withcarrying-wheels 1 which may be of any type. Those shown comprise aflange rim 2, of the type used with waggon or locomotive wheels, so asto enable flange 2 toreach solid ground more easily 40 by cuttingthrough the sand or mud.

According to this invent-ion, the rear driving-wheels 3 of the tractor,of-any dimensions and width, and keyed for instance on the driving axle4 in the bearing-trumpets 5, have a lattice-formed rim. Said rim could,

of course, consist of a metallic cylinder perforated in any suitableway, such perforations being of suitable dimensions.

Nevertheless, said rim is preferably constructed as shown. It comprisesa plurality 1 to 3, is shown a conventional.

-of "flat =?rings 6, the' Width ther-eOf being rarlially l disposed! fTheserings are connected by rings 7, made of a "zig-zag folded *o'rcorrugat'ed fiat baru Each corrugated ringFmay weldedotherwise-securedbetween two nae "rings; er eenver'seip *two zig- Z-agor corrugated rings may be joined by we1di1rg,-riv egirrgsboltaetc.asslio'wn 'fo'r e'xample Hdb 'j9 keyerl on axle d or driven by-any othermeans" (by cog-rim Z and chain or i by pinioin etm) is connected withtherimby a plurality of spokes 1'0 fittedto fiat rings 6; 'these can "becast :or stamped together, etc.,

or theyinay bebuilt on one anotherandfastened in any manner. 5 a i I Inthe example '.illustrated,--thecarrying -aIrd'- -driving wheel's3*areassiste'd by two carrying {wheels or rollers 11 and 1100 whichcover t e whelef'width of the track-between the w-h-elsfi.Theserollers,"arranged under the "tractor,"are' mounted'loose on" anaxle 13,

carried I by twocheeks 14, "cast --with- -th e 'truttnpet like parts 510f the rear aicle casing or fastened to them in any known manner.

*Rller's ll anfd '11 are formed in a similar manner-as wheels-3, oftwolatticed cheekslfi, between which are 'welde'd or otherwisese-"'cure'd two rings 16, each ma'de of a zigf-zagfoldedor'corrugatedflatbar. i i Obviously, the front wheels 1 may havethe same forma-tion. V

Owing to thevery -'l'arg'e* apertures 'providedintha-rimsof wheels'g'and rollers or cylinders 11 and 11*, the said rims are capable, undertheweightof the vehicle, to reach solid ground very easily, sand, wateror mud being forced through the rim. They reach it all the more easilythat the contact surface with the ground is. greatly lessened, while, onthe other hand, the bearing surface is increased by rollers or cylinders11 and 11 As wheels 3 reach the solid ground, they no longer skid andallow easy progression of the vehicle. As a matter of fact, said wheelseasil 1 grip the solid ground owing to the many projections constitutedby the metallic blades of the rim. 0

The sharp-edged projections of wheels 3 and of rollers or cylinders 11and 11a own as another advantage the faculty of breaking the weeds overwhich they pass and thereby destroying them. Inasmuch as there issubstantially no free space left between the wheels and rollers 11, 11,the weeds and roots will be out OE and removed over the whole width ofthe track of the machine.

It will be readily understood that this invention is in no wayrestricted to the construction illustrated and described which has onlybeen chosen by way of example.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In an agricultural engine the combination of a rear axle, outerwheels on said rear axle, inner wheels, means for supporting said innerwheels, the outer and inner wheels having hollowed rims adapted to cutoff weeds, and the inner wheels being so arranged that they cover thewhole space between the outer wheels. I

2. In an agricultural engine, the combination of a rear axle, twodriving wheels on the ends of said rear axle, a rear axle casing,carrying wheels adapted to cover the whole space between the drivingwheels and means on the rear axle casing for supporting said carryingwheels, the driving and carrying wheels having hollowed rims adapted tocut off weeds.

3. In an agricultural engine, the combination of a rear axle, twodriving wheels on the ends of said axle, a rear axle casing, supportingarms extending rearwardly from said rear axle casing, a horizontal shaftournalled in said supporting arms, carrying wheels freely mounted onsaid shaft, in such a position as to bear 011 the ground at a small distance from the lowest point of the driving wheels, said carrying wheelsbeing of a smaller diameter than the driving wheels and adapted to coverthe whole space between the driving wheels, the driving and carryingwheels having hollowed rims adapted to cut off weeds.

In testimony whereof I have signed my name to this specification.

PHUON G PHAN-QUANG.

